<!DOCTYPE html>
<html>
<form method="post" action="./login.php">
  <label class="log-lab">用户名</label>
  <input name="username" type="text" value=""/>
  <label class="log-lab">密码</label>
  <input name="password" type="password" value=""/>
  <input type="submit" value="登录"/>
</form>
</html>